Book is well written and exceptionally helpful. The exercises definitely helped to reinforce learning coding. Answers in the back of the book enable you to assess your progress. Product shipped quickly and arrived in great shape.

Diane L. Glickman - I like the product but the pump gets stuck and you ...

I like the product but the pump gets stuck and you have to clean the hole out with something sharp or it doesn't work. It needs to be fixed. The last bottle I bought I had to unscrew the top to get to the formula and then the formula got hard and I had to add water to it and that diluted the formula.